[Qt-creator] Qt Creator 2.7 onward does not work with some gdb on Windows

[Abir Basak]

I noticed that my MinGW w64 gdb stopped working when I updated from QtC
2.6.2 to QtC 2.7 . It no longer loads stack frame and locals and
expressions automatically. The gdb is from MingW w64 project build by ruben
vb , And it shows like GNU gdb (rubenvb-4.7.2-release) 7.5.50.20120920-cvs

I previously mailed about it, but there was no update after an initial
reply. I looked at the source code of QtC to check if I can detect why it
is not working (unfortunately I can not build & debug QtC, as I do not have
a Qt distribution, I use it for my C++ library with make file based
project).

It looks like extractGdbVersion does not handle the gdb version like the
one shown above. From code it looks that it parses 4.7.2 as gdb version and
makes it 407020, while it should go for the last part. I do not know
standard gdb versioning strategy but it looks many use vendor specific
information in brackets, so it should reject any number inside brackets.

QtC 6.4.2 uses to load python based debuggers even when it failed with
UNSUPPORTED GDB VERSION message due to wrong extractGdbVersion , but QtC
4.7 onward handleHasPython was refactored to have a call handlePythonSetup
( I was unable to get which commit changed that) and it no longer calls the
python specific loads.

I am looking for extractGdbVersion to fix for gdb version as shown above
(Or even a user specific override option to inform the gdb has python
support) so that I can work with newer QtC  versions (I have a lot of C++11
code like template alias which highlights only with newer QtC versions)


Thanks
abir
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